<template>

  <div class="app-container">


    <h2 style="text-align: center;">发布新课程</h2>


    <el-steps :active="2" process-status="wait" align-center style="margin-bottom: 40px;">

      <el-step title="填写课程基本信息"/>

      <el-step title="创建课程大纲"/>

      <el-step title="提交审核"/>

    </el-steps>


    <el-button type="text" @click="opendialog">添加章节</el-button>


    <ul class="chanpterList">

      <li

        v-for="chapter in chapterInfo"

        :key="chapter.id">

        <p>

          {{ chapter.title }}

          <span class="acts">

                <el-button type="text" @click="Openvideo(chapter.id)">添加课时</el-button>

                <el-button type="text" @click="chapteredit(chapter.id)">编辑</el-button>

                <el-button type="text" @click="chapterdelete(chapter.id)">删除</el-button>

            </span>

        </p>


        <!-- 视频 -->

        <ul class="chanpterList videoList">

          <li

            v-for="video in chapter.children"

            :key="video.id">

            <p>{{ video.title }}

              <span class="acts">



                <el-button type="text" @click="chapteredit(video.id)">编辑</el-button>

                <el-button type="text" @click="videodelete(video.id)">删除</el-button>

            </span>

            </p>

          </li>

        </ul>

      </li>

    </ul>


    <div>

      <el-button @click="previous">上一步</el-button>

      <el-button :disabled="saveBtnDisabled" type="primary" @click="next">下一步</el-button>

    </div>


    <!-- 添加和修改章节表单 -->

    <el-dialog :visible.sync="dialogChapterFormVisible" title="添加章节">

      <el-form :model="chapter" label-width="120px">

        <el-form-item label="章节标题">

          <el-input v-model="chapter.title"/>

        </el-form-item>

        <el-form-item label="章节排序">

          <el-input-number v-model="chapter.sort" :min="0" controls-position="right"/>

        </el-form-item>

      </el-form>

      <div slot="footer" class="dialog-footer">

        <el-button @click="dialogChapterFormVisible = false">取 消</el-button>

        <el-button type="primary" @click="saveOrUpdate">确 定</el-button>

      </div>

    </el-dialog>

    <!-- 添加和修改课时表单 -->

    <el-dialog :visible.sync="dialogVideoFormVisible" title="添加课时">

      <el-form :model="video" label-width="120px">

        <el-form-item label="课时标题">

          <el-input v-model="video.title"/>

        </el-form-item>

        <el-form-item label="课时排序">

          <el-input-number v-model="video.sort" :min="0" controls-position="right"/>

        </el-form-item>

        <el-form-item label="是否免费">

          <el-radio-group v-model="video.free">

            <el-radio :label="true">免费</el-radio>

            <el-radio :label="false">默认</el-radio>

          </el-radio-group>

        </el-form-item>


        <el-form-item label="上传视频">

          <el-upload


            :on-remove="handleVodRemove"
            :before-remove="beforeVodRemove"
            :on-success="handleVodUploadSuccess"

            :on-exceed="handleUploadExceed"


            :action="BASE_API+'/eduvod/video/uploadVideo'"

            :limit="1"

            class="upload-demo">

            <el-button size="small" type="primary">上传视频</el-button>

            <el-tooltip placement="right-end">
              <div slot="content">最大支持1G，<br>
                支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br>
                GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br>
                MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br>
                SWF、TS、VOB、WMV、WEBM 等视频格式上传
              </div>
              <i class="el-icon-question"/>
            </el-tooltip>
          </el-upload>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
        <el-button :disabled="saveVideoBtnDisabled" type="primary" @click="saveOrUpdateVideo">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>
<script>
  import chapter from '@/api/chapter/chapter'
  import video from '@/api/video/video'

  export default {
    data() {
      return {
        BASE_API: process.env.BASE_API, // 接口API地址
        dialogChapterFormVisible: false, //是否显示章节表单
        chapter: {// 章节对象
          title: '',
          sort: 0
        },
        chapterInfo: [],
        courseId: '',
        saveBtnDisabled: false, // 保存按钮是否禁用
        saveVideoBtnDisabled: false, // 课时按钮是否禁用
        dialogVideoFormVisible: false, // 是否显示课时表单
        chapterId: '', // 课时所在的章节id
        video: {// 课时对象
          title: '',
          sort: 0,
          free: 0,
          courseId: '',
          chapterId: '',
          videoSourceId: ''
        }
      }
    },

    created() {
      console.log('chapter created')
      if (this.$route.params && this.$route.params.id) {
        this.courseId = this.$route.params.id
        this.getAllindfo(this.courseId)
      }
    },
    methods: {
// 点击确定的时候
      handleVodRemove() {
        video.deleteYunVideo(this.video.videoSourceId)
          .then(response => {
            this.$message({
              type: 'success',
              message: response.message
            })
          })
      },

// 点击 × 的时候
      beforeVodRemove(file, fileList) {
        return this.$confirm(`确定移除 ${file.name}？`)
      },
//成功回调
      handleVodUploadSuccess(response, file) {
        this.video.videoSourceId = response.data.videoId
      },

//视图上传多于一个视频
      handleUploadExceed(files) {
        this.$message.warning('想要重新上传视频，请先删除已上传的视频')
      },
      Openvideo(chapterid) {
        this.video.videoSourceId = ''
        this.video.chapterId = chapterid
        this.dialogVideoFormVisible = true
      },
      videodelete(id) {
        this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          video.deleteVideo(id).then(response => {
            this.$message({
              type: 'success',
              message: '删除成功!'
            })
            // 关闭弹框
            this.dialogVideoFormVisible = false
            this.getAllindfo(this.courseId)
          })
        })
      },
      updateVideo() {
      },
      saveVideo() {
        this.video.courseId = this.courseId
        video.saveVideo(this.video).then(response => {
          this.$message({
            type: 'success',
            message: '添加成功!'
          })
          // 关闭弹框
          this.dialogVideoFormVisible = false
          this.getAllindfo(this.courseId)
          this.video = {}
        })
      },
      saveOrUpdateVideo() {
        this.saveVideo()
      },
      // 章节的操作
      chapterdelete(id) {
        this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          chapter.deleteChapterinfo(id).then(response => {
            this.$message({
              type: 'success',
              message: '删除成功!'
            })
            // 重写查询
            this.getAllindfo(this.courseId)
          })
        })
      },
      chapteredit(id) {
        this.dialogChapterFormVisible = true
        console.log(id)
        chapter.getChapterByid(id).then(response => {
          this.chapter = response.data.chapter
        })
      },
      opendialog() {
        this.dialogChapterFormVisible = true
        this.chapter.sort = 0
        this.chapter.title = ''
      },
      update() {
        chapter.updateChapter(this.chapter).then(response => {
          this.$message({
            type: 'success',
            message: '更新成功!'
          })
          // 关闭窗口
          this.dialogChapterFormVisible = false
          // 重写查询
          this.getAllindfo(this.courseId)
        })
      },
      save() {
        this.chapter.courseId = this.courseId
        chapter.saveChapter(this.chapter)
          .then(Response => {
            this.$message({
              type: 'success',
              message: '保存成功!'
            })
            // 关闭窗口
            this.dialogChapterFormVisible = false
            // 重写查询
            this.getAllindfo(this.courseId)
          })
      },
      saveOrUpdate() {
        if (!this.chapter.id) {
          this.save()
        } else {
          this.update()
        }
      },
      getAllindfo(id) {
        chapter.getChapterinfo(id)
          .then(Response => {
            this.chapterInfo = Response.data.chapterVolist
          })
      },
      previous() {
        console.log('previous')
        this.$router.push({ path: '/edu/course/info/' + this.courseId })
      },
      next() {
        console.log('next')
        this.$router.push({ path: '/edu/course/publish/' + this.courseId })
      }
    }
  }
</script>
<style scoped>
  .chanpterList {
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .chanpterList li {
    position: relative;
  }

  .chanpterList p {

    float: left;

    font-size: 20px;

    margin: 10px 0;

    padding: 10px;

    height: 70px;

    line-height: 50px;

    width: 100%;

    border: 1px solid #DDD;

  }

  .chanpterList .acts {

    float: right;

    font-size: 14px;

  }

  .videoList {

    padding-left: 50px;

  }

  .videoList p {

    float: left;

    font-size: 14px;

    margin: 10px 0;

    padding: 10px;

    height: 50px;

    line-height: 30px;

    width: 100%;

    border: 1px dotted #DDD;

  }

</style>
